JP2605900Y2 - Assembly box - Google Patents

Description

[Detailed description of the invention]

[0001]

Industrial Applicability The present invention has excellent durability, is suitable for storing heavy objects, is easy to handle, and has a stable assembled state without using other fixing means. Related to the assembly box.

[0002]

2. Description of the Related Art Conventionally, a large number of assembly boxes of various modes have been used.
Although a proposal has been made, a typical example is shown in FIG. 17 and FIG. The assembling box 1 is usually formed from a synthetic resin foam, and is formed by bending the side walls shown as 3, 3, 4, and 4 in the figure around a square bottom wall shown as 2 in the figure, and forming a V-shaped inside. Hinge part 5 formed in groove shape
... In such an assembling box 1, when used, the side walls 3, 3,.
4 and 4, the side walls 3, 3, 4, and 4 are fixed to each other by appropriate fixing means.

[0003]

However, in the case of such an assembling box 1, since the hinges 5 are located at the corners of the box when assembled, they may collide with or come into contact with other objects. However, there is a problem that the strength of the hinge portions 5 is reduced at an early stage and the durability cannot be said to be excellent. In addition, since the bottom wall 2 and the side walls 3, 3, 4, and 4 have hinge portions 5,.
It is not suitable for storing heavy objects. Further, since the side walls 3, 3, 4, 4 which are formed in the unfolded state and project radially outward are connected to the bottom wall 2 via the V-shaped groove-shaped hinge portions 5,... Not only does it take a lot of time, but if not handled carefully, it can always lead to breakage problems. In addition, other fixing means are separately required for fixing the side walls 3, 3, 4, and 4 to each other.

[0004] In view of such conventional problems, the assembly box according to the present invention has been devised. The assembly box has excellent durability, is suitable for accommodating heavy objects, and can be easily handled. In addition, the object is to stabilize the assembled state without using other fixing means.

[0005]

In order to achieve the above object, an assembly box according to the present invention is formed in a rectangular shape in plan view having an open top surface having a side wall around a rectangular bottom wall, and has a facing shape. On both sides of the pair of side walls, a vertical cut-off portion having a depth within a range of 1/2 of the opening width between the pair of side walls from the upper end of the side wall is formed, and a position corresponding to the lower end of the cut-off portion is formed. A hinge portion provided in a direction parallel to the bottom wall allows the upper portions of the pair of side walls to be inwardly foldable toward the upper surface of the bottom wall, and the upper portions of the other pair of side walls to be folded.
It is provided in a direction parallel to the bottom wall at a depth above the lower end of the separation portion by at least the thickness of the side wall on which the separation portion is formed, and at a depth within a half of the opening width between the pair of side walls. The hinged portion allows each of the side walls to be folded inward toward the upper surface of the bottom wall, and an assembling box having fixing means interposed between the side ends of the side walls looking into the cutoff portion and between the side ends facing each other via the hinge portion. And forming vertically separated portions provided on both sides of the pair of opposed side walls closer to the center than the inner surface positions of the other pair of side walls, and hinges of the other pair of side walls at the separated portions. The position corresponding to the portion is formed by bending the pair of side wall inner surface positions via the upper and lower inclined portions, and the upper and lower inclined portions serve as support edges when the side wall is bent. Item 1).

Further, another assembly box according to the present invention is formed in a rectangular box shape having a side wall around a square bottom wall and having an open top surface in a plan view. An upper and lower cut-off portion is formed between the upper end of the side wall and the upper surface of the bottom wall, leaving an interval therebetween, and upper and lower hinges are provided at the upper and lower ends of the cut-off portion in a direction parallel to the bottom wall. The distance between the hinge portions is 1 / の of the opening width between the pair of side walls.
The upper part and the lower part of the side wall are divided into an upper part and a lower part of the side wall. The lower portion can be folded inward toward the upper surface opening and the bottom wall upper surface by the upper and lower hinge portions, and the other pair of side walls are at least as thick as the side walls from the upper end and the lower end of the cut-off portion, respectively. Upper and lower hinge portions are provided on the lower side and the upper side in a direction parallel to the bottom plate, and the upper and lower side walls have the same length within the range of 1/2 of the opening width between the pair of side walls. Divide into the lower center,
The upper central portion of the side wall and the lower central portion of the side wall are continuously connected by an intermediate hinge portion provided in a direction parallel to the bottom wall, so that the upper central portion of the side wall and the lower central portion of the side wall can be folded inward. A fixing means is provided between the side ends as viewed from the portion and between the side ends facing each other via the hinge portion.

[0007] The hinge portion of the assembly box according to the present invention as described above can be provided by forming a cut in a part of the side wall forming member except for the thickness functioning as a hinge. Further, a hook-and-loop fastener can be used as the fixing means. Further, these assembly boxes can be formed from a synthetic resin foam, and it is preferable to use a polyolefin resin foam such as a polypropylene resin foam or a polyethylene resin foam as the synthetic resin foam.

[0008]

The assembly box according to the present invention as described above,
It is folded and assembled as shown below.

First, in the assembly box according to the first aspect, when folded, the upper portions of the pair of side walls on which the cut-off portions are formed are released from the lower portion of the side walls and the other pair of side walls by fixing means. Since each of the upper portions of the other pair of side walls is released from being fixed by the fixing means with the lower portions of the side walls after being tilted inward in the horizontal direction, and similarly tilted inward toward the upper surface of the bottom wall, respectively. is there. Also, when assembling,
Contrary to the above, the upper portions of the pair of side walls folded later are raised on the lower portions of the respective side walls, and are fixed by fixing means between the upper and lower portions of these side walls. The upper part rises on the lower part of each side wall, and is fixed by fixing means at the cutoff between the upper part and lower part of these side walls and between the other pair of side walls.

[0010] In the assembly box according to the second aspect, when folded, the upper central portion and the lower central portion of the pair of side walls forming the cut-off portion are disengaged from the overlapped engaging portion therebetween, and The fixing means by the fixing means with the upper and lower portions of the side wall and the fixing means with the other pair of side walls are released, and after being horizontally inwardly directed toward the upper surface opening and the lower surface, respectively, the other pair The fixing of the upper and lower central portions of the side walls by the fixing means therebetween is released, and the fixing of the upper and lower central portions and the lower and central portions of the side walls by the fixing means is released. Push the vicinity of the hinge part provided between the upper part and the center lower part inward,
The other side wall that has been folded in the horizontal direction is folded in a superposed state between the upper center and the lower center. On the other hand, when assembling, contrary to the above, the center upper part and the center lower part of the pair of side walls folded later are pulled out outward with the vicinity of the hinge part provided between them and allowed to rise, and the center of the side wall is After being fixed by fixing means between the upper part and the lower central part, between the upper part and the upper central part of the side wall, and between the lower central part and the lower part, the central upper part and the lower central part of the other pair of side walls are respectively It rises on the upper and lower portions of the side wall to engage the overlapping engagement portions between the upper central portion and the lower central portion, and between the upper portion and the upper central portion and between the lower central portion and the lower portion of the side wall, and the like. Is fixed by fixing means at a cut-off portion between the pair of side walls.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the assembly box according to the present invention will be further described with reference to the accompanying drawings.

1 to 11 show a first embodiment of an assembly box according to the present invention. This is formed entirely of a synthetic resin foam, for example, a polyolefin resin foam such as a polypropylene resin foam or a polyethylene resin foam, or a polystyrene resin foam. And
As shown in FIG. 1 and FIG. 2, the upper portions of the side walls are respectively tilted in the horizontal direction to enable folding.

That is, the assembly box shown as 10 in the figure is:
When assembled, as shown in FIG. 1 and FIGS. 3 to 7, it has a rectangular box shape in plan view with an open top surface having side walls 12, 12, 13, 13 around a rectangular bottom wall 11. This is formed to be foldable as shown in FIG. In the drawing, reference numeral 14 denotes a lid which is attached to the upper surface opening of the assembled box 10 in the assembled state, which is also formed of a synthetic resin foam similarly to the assembled box 10. The side wall 1 is provided on the assembled box 10 in the assembled state.
An annular notch 15 is formed in the inner periphery of the upper end of 2, 12, 13, 13 and the annular notch 15 provided on the lid 14 is fitted into the annular notch 15, and the lid 1 is inserted into the assembled box 10 in the assembled state.
4 is applied while maintaining the airtight state. In the figure, reference numeral 17 denotes a reinforcing projection of the annular projection 16 provided on the lid 14 in a cross shape. In the drawing, reference numeral 18 denotes an engagement projection provided on the bottom wall 11 of the assembly box 10, and reference numeral 19 denotes an engagement step provided on the top surface of the lid 14.
These are fitted with each other to enable the stacked assembly boxes 10 to be stacked. The engaging projections 18 are formed in such a size that they can be fitted into the upper surface opening of the assembled assembly box 10 so that the assembled assembly box 10 with the lid open can also be stacked.

[0014] On both sides of a pair of opposed side walls 12 on the short side shown as 12 and 12 in the figure, these side walls 12 and 12 are provided.
The vertical cut-off portions 20, 2 each having a depth within a half of the opening width between the pair of side walls 12, 12 shown as A in FIG.
0, 20, and 20 are formed, and the short side walls 12 and 12 and the long side walls 13 and 13 are divided at their upper portions. And in the illustrated embodiment, the cut-off portions 20, 20, 20,
Reference numeral 20 denotes both sides of the short side walls 12, 12, on the outer surfaces of the side walls 12, 12, slightly closer to the center than the inner surfaces of the long side walls 13, 13, and on the inner surfaces of the side walls 12, 12. Long side wall 1
These side walls 12, 12 are located near the inner surface positions of 3, 13.
The cutouts 20 are formed in a state of being expanded from the outer surface side to the inner surface side in plan view, and each of the cut-off portions 20 has a vertically inclined portion at a position corresponding to a hinge portion provided on a long side wall 13 described later. It is formed to be bent near the inner surface position of the long side wall 13 via 21 and 21. In addition, the short side walls 12 and 12
As shown in FIGS. 1, 4, 6, 8, and 10, the upper portions 12 a and 12 a are formed with the bottom wall 11 at a depth position corresponding to the cutoff portions 20, 20, 20 and 20. Hinge parts 22, 22 provided in parallel direction
Thereby, it can be folded inward toward the upper surface of the bottom wall 11. On the other hand, a pair of side walls 13 and 13 on the long side
As shown in FIGS. 1, 4, 7, 9, and 11, the upper portion 13a is separated from the lower end of the cut-off portion 20, 20, 20, at least by the side wall 12 on the short side. On the upper side by the thickness of
Further, hinge portions 23, 23 provided in a direction parallel to the bottom wall 11 at a depth position within a range of 1/2 of the opening width between the pair of long side walls 13, 13 shown as B in FIG. The inner wall can be folded toward the upper surface of the bottom wall 11. Then, as described above, the upper and lower inclined portions 21 and 21 formed by bending the cutoff portions 20, 20, 20, and 20 are combined with these long side walls 1
The supporting edges 24, 24 when the members 3 and 13 are folded are used to increase the stacking support strength of the folded assembly box 10. The separating portions 20, 20, 20, 20 and the hinge portions 22, 22, 23, 23
After filling the expandable synthetic resin particles as the molding raw material in the molding space of the molding die for molding the assembly box 10, these forming plates are allowed to enter the molding space before heating, or are heated. After forming, the forming blade is advanced by entering these forming blades into the forming space, or after the assembly box 10 to be a molded product is released from the forming die, a cut is formed by a forming blade or a hot wire. It is provided. In addition, hinge portions 22, 22, 23, 23
Are formed by forming cuts or the like in a part of the side wall 12, 12, 13, 13 forming member, leaving a thickness for functioning as a hinge. The remaining thickness cannot be specified unconditionally depending on the size of the assembly box 10, the type of the resin, the expansion ratio, and the presence or absence of the skin layer, but is preferably about 0.5 to several mm. When the assembly box 10 is formed of a polyolefin resin foam such as a polypropylene resin foam or a polyethylene resin foam, the hinge portions 22, 22, 23, and 23
Has excellent bending strength, but when formed from a polystyrene resin foam, the hinge portion 2
The bending strength of 2, 22, 23, and 23 is not sufficient, and it is appropriately considered to attach and reinforce a reinforcing member such as a sheet or a film or a cloth formed of a synthetic resin body or the like. In addition, the cut-off portions 20 on the short side walls 12, 12 and the long side walls 13, 13,
20, 20, 20, between the side edges and the side walls 12, 12, 13, 13
The upper portions 12a, 12a, 13a, and 13a of the side walls are fixed on the lower portions 12b, 12b, 13b, and 13b of the side walls between the side ends facing each other via the hinge portions 22, 22, 23, and 23. Together with the upper portions 12a, 12a, 13 of the adjacent side walls.
a, 13a are fixed to each other. In the illustrated embodiment, a hook-and-loop fastener is used as the fixing means 25, and one of the hook-and-loop fasteners is attached to one of the corresponding portions of the side ends, and the other hook-and-loop fastener is attached to the other. By the way, if a hook-and-loop fastener which becomes the fixing means 25 is attached to the opposing portions of these side ends, a gap corresponding to the thickness is originally formed when assembled, but the hook-and-loop fastener is combined with the corresponding portions of these side ends. Such a problem can be avoided by pressing and attaching using the elasticity of the resin foam.

Thus, the assembling box 10 is folded and assembled as described below. First, when folded, the upper portions 12a, 12a of the short side walls 12, 12 provided with the cut-off portions 20, 20 on both sides, respectively.
The engagement of the hook-and-loop fastener, which serves as the fixing means 25, with the lower portions 12b, 12b of the side walls 12, 12 and the side walls 13, 13 on the long sides, respectively, is released, and as shown in FIGS. 11, the upper part 13 a of the long side wall 13 is fixed to the lower part 13 b of the side wall 13, respectively.
10 and 11 by releasing the engagement of the hook-and-loop fastener.
As shown in the figure, the user similarly leans horizontally toward the upper surface of the bottom wall 11. At this time, as shown in FIGS. 10 and 11,
The upper part 12 of the short side walls 12, 12 folded earlier
a, the upper side 13 of the long side wall 13 on the upper side of 12a
a and 13a are folded in an overlapping state,
Support edges 24, 24 on the upper side 13a, 13a side and support edges 2 on the lower side 13b, 13b side of the long side walls 13, 13
4 and 24 are in contact with each other, so that the upper side wall 1 on the long side is formed.
Since 3a and 13a are held in a horizontal state, the stacking support strength in this state is increased. Then, in the state shown in FIGS. 10 and 11, the lid 1 is appropriately placed thereon as shown in FIG.
4 is placed and handled. Also, when assembling, contrary to the above, the upper side walls 13a of the long side walls 13 are raised on the lower side walls 13b as shown in FIGS. After engaging a hook-and-loop fastener serving as a fixing means 25 between the lower side 13a and the lower side walls 13b, 13b, the upper sides 12a, 12a of the short side walls 12, 12 are respectively connected to the side walls 12 as shown in FIGS. , 12 lower part 12b, 12b
The upper side walls 12a, 12a and the lower portions 12b, 12b, as well as the long side walls 13,
The hook-and-loop fastener serving as the fixing means 25 in the cut-off portions 20, 20 between the hook-and-loop fastener 13 is engaged.

The cutouts 20, 20, 20, 20 provided on both sides of the short side walls 12, 12 are within a range of 1/2 of the opening width between the pair of short side walls 12, 12. This is so that when the upper portions 12a, 12a of the side walls 12, 12 are folded toward the upper surface of the bottom wall 11, they can be tilted horizontally without overlapping each other. is there. However, when such an assembling box 10 is formed of a synthetic resin foam as in the illustrated embodiment, the depth relationship between the cutouts 20, 20, 20, 20 depends on the pair of side walls 12, Even if the width slightly exceeds one half of the width of the opening between the twelve 12, it may be possible to deform it by the elasticity of the material so that the upper side walls 12a, 12a can be tilted horizontally without overlapping each other. For this reason, the depth within the range of 1/2 of the opening width referred to here means the upper part 1 of these side walls.
This concept assumes that 2a and 12a can be tilted in the horizontal direction. It is the same concept that the hinge portions 23 are provided at a depth within a half of the opening width between the pair of long side walls 13 on the long side.

The assembly box 10 shown in FIGS.
When the height of each of the side walls 12, 12, 13, 13 greatly exceeds 1/2 of the opening widths A and B between the pair of opposing side walls, that is, when the depth of the assembly box is increased, Will not become too small.

Considering such a case, FIGS.
FIG. 16 is a second embodiment of the assembly box according to the present invention shown in FIG.

When assembled, the assembling box shown as 30 in the drawing has a rectangular bottom wall 31 as shown.
It has a box-like shape having a rectangular shape in plan view and an open top surface having side walls 32, 32, 33, 33 around it. As in the case of the assembling box 10, an annular notch 34 is formed in the inner periphery of the upper end of the side walls 32, 32, 33, 33, and the bottom wall 31 has an engaging projection. A part 35 is provided below.

On both sides of the short side walls shown as 32 and 32 in the figure, the upper end and the bottom wall of the side walls 32 and 32 are located at the inner surface position of the long side walls 33 and 33 or near the center thereof. Vertically separated portions 36, 36, 36, 36 are formed leaving a space between the upper surface 31 and the upper surface. The separation portions 36, 36, 36, 36 also have upper and lower inclined portions 37, 37 formed on the upper and lower sides thereof. And
On the side walls 32, 32, the cutoff portions 36, 36, 36, 3
6 are provided at the upper end and the lower end in a direction parallel to the bottom wall 31.
1 and 41 is 1 / の of the opening width between the pair of side walls 32 and 32.
2 and is divided into a central upper part 32c and a central lower part 32d having a length within the range of 2.
Overlapping engagement portions 38 and 39 are formed on the opposite side end sides of d so that the upper side wall center 32c and the lower side wall center 32d can be folded inward toward the upper surface opening and the upper surface of the bottom wall 31, respectively. In the figure, reference numeral 40 denotes a recess for a handle provided in the overlapped engaging portion 38 in the upper central portion 32c of the side wall. On the other hand, a pair of long side walls 33, 33
Upper and lower hinge portions 43, 43 are provided in a direction parallel to the bottom wall 31 at least from the upper and lower ends of the lower and upper portions by the thickness of the short side wall 33, respectively. The upper and lower central portions 33c, 33c and the lower central portions 33d, 33d, which have the same length, are provided between the pair 43, 43, respectively, within a range of 1/2 of the opening width between the pair of side walls 33, 33 on the long side. At the same time, the upper portions 33c, 33c of the side walls and the lower portions 33d, 33
d and hinge portions 42, 4 provided in a direction parallel to the bottom wall 31.
2, the upper side walls 33c, 33c and the lower side walls 33d, 33d of the long side walls 33, 33 can be folded inward. Then, in each of the side walls 32, 32, 33, 33, each of the cut portions 36,
6, 36, 36 between the side end looking up and each hinge portion 41,
A hook-and-loop fastener serving as a fixing means 44 is provided between the side ends facing each other via 41, 42, 42, 43, 43.

The assembling box 30 is folded and assembled as described below. First, when folding, the upper central portion 3 of the short side walls 32, 32
2c, 32c and the lower central part 32d, 32d are respectively connected to the upper part 32a, 32a and the lower part 32 of the side walls 32, 32.
b, 32b, and between the long side walls 33, 33, the engagement of the surface fasteners serving as the fixing means 44 of the separation portions 36, 36 is released, and the upper surface opening and the upper surface of the bottom wall 31 are removed. After tilting inward in the horizontal direction, the long side walls 33, 3
3, the upper central part 33c, 33c and the lower central part 33d, 33
d, disengagement of the hook-and-loop fastener which becomes the fixing means 44 of the hinge portions 42, 42, and the side walls 33,
The engagement of the hook-and-loop fastener as the fixing means 44 with the upper part 33a, 33a and the lower part 33b, 33b of 33 is released, and the vicinity of the hinge parts 42, 42 provided between the central upper parts 33c, 33c and the central lower parts 33d, 33d. Is pushed in between the central upper portions 32c, 32c and the central lower portions 32b, 32b of the short side walls 32, 32 folded earlier, and the long side walls 3
Upper central portions 33c, 33c and lower central portion 33 of 3, 33
d and 33d are folded in the horizontal direction and folded in a superposed state. Also, when assembling, contrary to the above,
Hinge portions 42, 42 provided between upper central portions 33c, 33c and lower central portions 33d, 33d of long side walls 33, 33.
It is pulled out to the outside with its vicinity, and is made to rise, and the center upper part 33c, 33c and the center lower part 33 of the side walls 33, 33 are raised.
d, 33d, a hook-and-loop fastener serving as a fixing means 44 between them, and between the upper portions 33a, 33a of the side walls 33, 33 and the central upper portions 33c, 33c, and the central lower portion 33d,
After engaging the hook-and-loop fastener which becomes the fixing means 44 between 33d and the lower portions 33b, 33b, the central upper portions 32c, 32c and the central lower portions 32d, 32d of the short side walls 32, 32 are engaged.
Are raised above the upper portions 32a, 32a and the lower portions 32b, 32b of the side walls 32, 32, respectively, so that the central upper portions 32c, 32c and the central lower portion 32 of the side walls 32, 32 are formed.
d, 32d, the overlapping engagement portions 38, 39 are engaged with each other, and the side wall upper portions 32a, 32a and the side wall center upper portion 32
The hook-and-loop fasteners serving as fixing means 44 between the side walls c, 32c and the lower side walls 32d, 32d and the lower side walls 32b, 32b and between the side walls 33, 33 facing the long side are brought into the engaged state.

In the illustrated embodiment, the fixing means 2
5 and 44 may use a surface fastener, use other general fasteners or hooks, or form a projection and a recess that fit together.

[0023]

[Effect of the invention] In the assembly box according to the invention as described above,
There is a flat box-shaped part formed from the bottom wall and the lower part of the side wall at the bottom, and when folded, all hinge parts are located inside the outer periphery of the bottom wall, and when assembled, the hinge part is not located at the corner of the box Therefore, the hinge portion is not particularly damaged, and not only is the durability improved, but also suitable for storing heavy objects. Further, since the side wall is folded on the bottom wall, handling can be easily performed. Further, since the assembled state is held by the fixing means, it becomes stable.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an assembled state of a first embodiment of an assembly box according to the present invention;

FIG. 2 is a perspective view of the same folded state.

FIG. 3 is a front view of the same assembled state.

FIG. 4 is a side view of the same assembled state.

FIG. 5 is a plan view of the same assembled state.

FIG. 6 is a vertical sectional front view of the same assembled state.

FIG. 7 is a longitudinal sectional side view of the assembled state.

FIG. 8 is a vertical sectional front view of the same folding unit.

FIG. 9 is a vertical side view of the same folding unit.

FIG. 10 is a longitudinal sectional front view of the same folded state.

FIG. 11 is a vertical sectional side view of the same folded state.

FIG. 12 is an assembled perspective view showing a second embodiment of the assembly box according to the present invention;

FIG. 13 is a front view of the same assembled state.

FIG. 14 is a side view of the same assembled state.

FIG. 15 is a vertical sectional front view of the same assembled state.

FIG. 16 is a longitudinal sectional side view of the same assembled state.

FIG. 17 is a plan view showing a conventional assembly box.

FIG. 18 is a longitudinal sectional front view of the same.

[Explanation of symbols]

10 assembly box, 11 bottom wall, 12 side wall, 13
Side wall, 14 lid, 15 annular notch, 16 annular protrusion, 17 reinforcing protrusion, 18 engaging protrusion, 19 engaging step, 20 separating part, 21 inclined part, 22 hinge part, 23 hinge part, 24 support Rim, 25 fixing means, 30 assembly box, 31 bottom wall, 32 side walls,
33 side wall, 34 annular notch, 35 engagement projection,
36 separation part, 37 inclined part, 38 overlapping engagement part,
39 Overlapping engaging portion, 40 concave portion for handle, 41 hinge portion, 42 hinge portion, 43 hinge portion, 44 fixing means.

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A 5-40127 (JP, U) JP-A 60-188195 (JP, U) JP-A 58-163436 (JP, U) JP-A 59- 183891 (JP, U) Japanese Utility Model Hei 4-21429 (JP, U) Japanese Utility Model Utility Model 1-76419 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) B65D 6/18-6 /twenty two

Claims (6)

(57) [Scope of request for utility model registration] 1. A rectangular box having a top surface with a side wall around a square bottom wall and having an open top surface and having a rectangular shape in a plan view. A vertical cut-off portion having a depth within a half of the width is formed, and upper portions of the pair of side walls are formed by hinge portions provided in a position corresponding to a lower end of the cut-out portion in a direction parallel to the bottom wall. Each of the pair of side walls can be folded inward toward the upper surface of the bottom wall, and the upper portions of the other pair of side walls are located above the lower end of the cut portion by at least the thickness of the side wall on which the cut portion is formed. By a hinge portion provided at a depth position within a range of 1/2 of the opening width between the side walls in a direction parallel to the bottom wall,
An assembling box, which is foldable inward toward the upper surface of the bottom wall, and has fixing means interposed between side ends of the side walls looking into the cut-off portion and side ends facing each other via a hinge portion. Vertical cut portions provided on both sides of the pair of opposed side walls are formed closer to the center than the inner surface positions of the other pair of side walls, and positions corresponding to the hinge portions of the other pair of side walls in the cut portions. An assembly box in which the upper and lower inclined portions are bent at the inner surface positions of the pair of side walls via upper and lower inclined portions, and the upper and lower inclined portions are used as supporting edges when the side walls are bent. 2. A quadrangular box having a top surface with a side wall around a bottom wall of a quadrangular shape and having an open top surface and having a rectangular shape in a plan view. Vertically separated portions are formed leaving respective intervals, and upper and lower hinge portions are provided at upper and lower ends of the separated portions in a direction parallel to the bottom wall, and the upper and lower hinge portions are respectively formed between the pair of side walls. The opening width of the side wall is divided into an upper portion and a lower portion of the center of the side wall having a length within a range of ２ of the opening width of the opening. The upper side wall center and the lower side wall center can be folded inward toward the upper surface opening and the upper surface of the bottom wall by the upper and lower hinge portions, respectively, and the other pair of side walls are respectively separated from the upper end and the lower end of the separation portion. At least as much as the thickness of the side wall on which the cutout portion is formed Only upper and lower hinge portions are provided on the lower side and the upper side in a direction parallel to the bottom plate, and the upper and lower hinge portions are respectively connected to the upper center of the side wall having the same length within a range of 1/2 of the opening width between the pair of side walls. Divided into the side wall center lower part, these side wall center upper part and side wall center lower part are connected continuously by an intermediate hinge part provided in the direction parallel to the bottom wall, and the side wall center upper part and side wall center lower part can be folded inward. An assembling box in which fixing means is interposed between side edges of each side wall, which are viewed from a cut-off portion, and between side edges facing each other via a hinge portion. 3. The assembly box according to claim 1, wherein the hinge portion is provided by forming a cut in a part of the side wall forming member except for a thickness functioning as a hinge. 4. The method according to claim 1, wherein the resin is formed from a synthetic resin foam.
3. The assembly box according to any one of 3. 5. The assembly box according to claim 4, wherein the synthetic resin foam is a polyolefin resin foam such as a polypropylene resin foam or a polyethylene resin foam. 6. The assembly box according to claim 1, wherein a hook-and-loop fastener is used as the fixing means.